Full face respirator mask

Abstract

A full face respirator mask includes a base having a base plate, a front protruding portion extending forwardly from a front portion of the base plate, an air inlet extending through the front protruding portion and the base plate, a plurality of connectors connected to the base plate, and an assembling ring disposed on a rear peripheral edge of the base plate and having a plurality of engaging grooves. A flexible interface is detachably assembled to the base, and includes a ring-shaped mounting portion connected to the assembling ring, and an abutment portion for abutting against a face of a user. The mounting portion has a ring-shaped embedding groove receiving the assembling ring.

What is claimed is: 
     
         1 . A full face respirator mask, comprising:
 a base including a base plate suitable for covering a face of a user, a front protruding portion extending forwardly from a front portion of said base plate, an air inlet extending through said front protruding portion and said base plate in a front-rear direction, a plurality of connectors connected to said base plate for engagement with a head strap unit, and an assembling ring disposed on a rear peripheral edge of said base plate and extending rearwardly from said base plate, said assembling ring having a plurality of engaging grooves that open rearwardly; and   a flexible interface detachably assembled to said base and including a ring-shaped mounting portion connected to said assembling ring, and an abutment portion connected to and extending rearwardly from a periphery of said mounting portion and suitable for abutting against the face of the user, said mounting portion having a ring-shaped embedding groove that is formed in a front peripheral edge thereof, that opens forwardly and that receives said assembling ring;   wherein said engaging grooves provide a required deformation space of said base plate such that said base plate flexes rearwardly when said connectors are pulled rearwardly.   
     
     
         2 . The full face respirator mask as claimed in  claim 1 , wherein said assembling ring includes an upper side section, a lower side section opposite to said upper side section in a top-bottom direction transverse to the front-rear direction, and two connecting sections connected between said upper side section and said lower side section, said engaging grooves being provided on said upper side section and said lower side section. 
     
     
         3 . The full face respirator mask as claimed in  claim 2 , wherein said assembling ring at least has three engaging grooves, two of said engaging grooves being provided on said upper side section, a third one of said engaging grooves being provided on said lower side section. 
     
     
         4 . The full face respirator mask as claimed in  claim 3 , wherein said engaging grooves are mirror image of each other relative to a central axis of said full face respirator mask. 
     
     
         5 . The full face respirator mask as claimed in  claim 1 , wherein said base includes four connectors, two of which are connected to left and right upper parts of said base plate, and the other two of which are connected to left and right lower parts of said base plate. 
     
     
         6 . The full face respirator mask as claimed in  claim 1 , wherein said mounting portion further has a plurality of ribs provided inside said ring-shaped embedding groove and respectively engaging said engaging grooves. 
     
     
         7 . The full face respirator mask as claimed in  claim 6 , wherein, when said base is viewed from the top, said base plate has a curved shape that opens rearwardly, and has an arc length and a chord length, a length difference between said arc length and said chord length being 4 cm. 
     
     
         8 . The full face respirator mask as claimed in  claim 1 , wherein said base is made in one piece of polycarbonate (PC). 
     
     
         9 . The full face respirator mask as claimed in  claim 1 , wherein said flexible interface is made in one piece of silicone. 
     
     
         10 . The full face respirator mask as claimed in  claim 1 , further comprising an adapter mounted on a front side of said front protruding portion.